author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
Thu, 28 Aug 2014 22:45:36 +0900 | |
changeset 22434 | 40ce05b50148 |
parent 21084 | 70252bdfd39c |
child 25079 | bee00e0c2e45 |
permissions | -rw-r--r-- |
15168 | 1 |
# Copyright 2011 Fog Creek Software |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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import os |
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import urllib2 |
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import re |
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from mercurial import error, httppeer, util, wireproto |
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from mercurial.i18n import _ |
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import lfutil |
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LARGEFILES_REQUIRED_MSG = ('\nThis repository uses the largefiles extension.' |
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'\n\nPlease enable it in your Mercurial config ' |
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'file.\n') |
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# these will all be replaced by largefiles.uisetup |
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capabilitiesorig = None |
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ssholdcallstream = None |
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httpoldcallstream = None |
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def putlfile(repo, proto, sha): |
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'''Put a largefile into a repository's local store and into the |
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user cache.''' |
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proto.redirect() |
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path = lfutil.storepath(repo, sha) |
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util.makedirs(os.path.dirname(path)) |
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tmpfp = util.atomictempfile(path, createmode=repo.store.createmode) |
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try: |
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try: |
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proto.getfile(tmpfp) |
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tmpfp._fp.seek(0) |
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if sha != lfutil.hexsha1(tmpfp._fp): |
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raise IOError(0, _('largefile contents do not match hash')) |
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tmpfp.close() |
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lfutil.linktousercache(repo, sha) |
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except IOError, e: |
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repo.ui.warn(_('largefiles: failed to put %s into store: %s\n') % |
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(sha, e.strerror)) |
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return wireproto.pushres(1) |
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finally: |
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tmpfp.discard() |
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return wireproto.pushres(0) |
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def getlfile(repo, proto, sha): |
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'''Retrieve a largefile from the repository-local cache or system |
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cache.''' |
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filename = lfutil.findfile(repo, sha) |
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if not filename: |
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raise util.Abort(_('requested largefile %s not present in cache') % sha) |
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f = open(filename, 'rb') |
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length = os.fstat(f.fileno())[6] |
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# Since we can't set an HTTP content-length header here, and |
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# Mercurial core provides no way to give the length of a streamres |
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# (and reading the entire file into RAM would be ill-advised), we |
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# just send the length on the first line of the response, like the |
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# ssh proto does for string responses. |
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def generator(): |
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yield '%d\n' % length |
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for chunk in util.filechunkiter(f): |
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yield chunk |
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return wireproto.streamres(generator()) |
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def statlfile(repo, proto, sha): |
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'''Return '2\n' if the largefile is missing, '0\n' if it seems to be in |
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good condition. |
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The value 1 is reserved for mismatched checksum, but that is too expensive |
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to be verified on every stat and must be caught be running 'hg verify' |
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server side.''' |
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filename = lfutil.findfile(repo, sha) |
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if not filename: |
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return '2\n' |
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return '0\n' |
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def wirereposetup(ui, repo): |
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class lfileswirerepository(repo.__class__): |
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def putlfile(self, sha, fd): |
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# unfortunately, httprepository._callpush tries to convert its |
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# input file-like into a bundle before sending it, so we can't use |
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# it ... |
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if issubclass(self.__class__, httppeer.httppeer): |
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res = None |
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try: |
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res = self._call('putlfile', data=fd, sha=sha, |
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headers={'content-type':'application/mercurial-0.1'}) |
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d, output = res.split('\n', 1) |
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for l in output.splitlines(True): |
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self.ui.warn(_('remote: '), l) # assume l ends with \n |
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return int(d) |
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except (ValueError, urllib2.HTTPError): |
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self.ui.warn(_('unexpected putlfile response: %r\n') % res) |
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return 1 |
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# ... but we can't use sshrepository._call because the data= |
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# argument won't get sent, and _callpush does exactly what we want |
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# in this case: send the data straight through |
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else: |
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try: |
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ret, output = self._callpush("putlfile", fd, sha=sha) |
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if ret == "": |
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raise error.ResponseError(_('putlfile failed:'), |
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output) |
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return int(ret) |
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except IOError: |
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return 1 |
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except ValueError: |
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raise error.ResponseError( |
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_('putlfile failed (unexpected response):'), ret) |
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def getlfile(self, sha): |
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"""returns an iterable with the chunks of the file with sha sha""" |
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stream = self._callstream("getlfile", sha=sha) |
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length = stream.readline() |
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try: |
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length = int(length) |
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except ValueError: |
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self._abort(error.ResponseError(_("unexpected response:"), |
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length)) |
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# SSH streams will block if reading more than length |
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for chunk in util.filechunkiter(stream, 128 * 1024, length): |
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yield chunk |
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# HTTP streams must hit the end to process the last empty |
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# chunk of Chunked-Encoding so the connection can be reused. |
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if issubclass(self.__class__, httppeer.httppeer): |
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chunk = stream.read(1) |
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if chunk: |
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self._abort(error.ResponseError(_("unexpected response:"), |
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chunk)) |
15168 | 136 |
|
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@wireproto.batchable |
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def statlfile(self, sha): |
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f = wireproto.future() |
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result = {'sha': sha} |
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yield result, f |
15168 | 142 |
try: |
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yield int(f.value) |
15168 | 144 |
except (ValueError, urllib2.HTTPError): |
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# If the server returns anything but an integer followed by a |
15168 | 146 |
# newline, newline, it's not speaking our language; if we get |
147 |
# an HTTP error, we can't be sure the largefile is present; |
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# either way, consider it missing. |
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149 |
yield 2 |
15168 | 150 |
|
151 |
repo.__class__ = lfileswirerepository |
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152 |
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153 |
# advertise the largefiles=serve capability |
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154 |
def capabilities(repo, proto): |
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return capabilitiesorig(repo, proto) + ' largefiles=serve' |
15168 | 156 |
|
157 |
def heads(repo, proto): |
|
158 |
if lfutil.islfilesrepo(repo): |
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159 |
return wireproto.ooberror(LARGEFILES_REQUIRED_MSG) |
15168 | 160 |
return wireproto.heads(repo, proto) |
161 |
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|
162 |
def sshrepocallstream(self, cmd, **args): |
15168 | 163 |
if cmd == 'heads' and self.capable('largefiles'): |
164 |
cmd = 'lheads' |
|
165 |
if cmd == 'batch' and self.capable('largefiles'): |
|
166 |
args['cmds'] = args['cmds'].replace('heads ', 'lheads ') |
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167 |
return ssholdcallstream(self, cmd, **args) |
15168 | 168 |
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169 |
headsre = re.compile(r'(^|;)heads\b') |
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170 |
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171 |
def httprepocallstream(self, cmd, **args): |
15168 | 172 |
if cmd == 'heads' and self.capable('largefiles'): |
173 |
cmd = 'lheads' |
|
174 |
if cmd == 'batch' and self.capable('largefiles'): |
|
19917
cff331cbb5ee
largefiles: make the protocol hack for replacing heads with lheads more precise
Mads Kiilerich <madski@unity3d.com>
parents:
19009
diff
changeset
|
175 |
args['cmds'] = headsre.sub('lheads', args['cmds']) |
16247
d87d9d8a8e03
largefiles: remove use of underscores that breaks coding convention
Na'Tosha Bard <natosha@unity3d.com>
parents:
16155
diff
changeset
|
176 |
return httpoldcallstream(self, cmd, **args) |